I'm almost finished refitting my kitchen/diner and pondering how to get the best sound for the least money in there.

I have an spare Chromecast Audio and two redundant pairs of speakers (Quadral Phonologues and Kef Cresta 10s) and have two ideas as follows.

Buy a cheap integrated amp, plug the Chromecast and one of the pairs of speakers in, job done.

Buy a pair of active speakers, plug the Chromecast in, job done.

This system is just for background music and although I want it to sound as good as possible the speakers will probably be stuck on top of a wall unit and the amp hidden away somewhere.

I'm only planning on spending £100 max so my thoughts are the amp is a better bet, or am I wrong?